%0 Journal Article %A V. S. Rodrigues %A A. A. Santana %T A note on a~problem due to Zelmanowitz %J Algebra and discrete mathematics %D 2009 %P 85-93 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/ADM_2009_3_a8/ %G en %F ADM_2009_3_a8